Hi eldenroot,
Because Twitter and Facebook are the two most frequently used social media networks and multisharing was a common feature request (particularly for these two services), we have left this available via the Twitter button, which benefits both your readers and you as a publisher, if you choose to use it.
This multisharing interface accessed through the Twitter button was integrated before the v7 release, but we didn’t receive negative feedback until after the same share panel was introduced to the Facebook share button. We have since reverted Facebook sharing to be routed through the standard Facebook interface, but the multishare panel that you can access through the Twitter button has been integrated into all of our products, which we are currently working to streamline.
We still have many enhancements planned while we continue to work on our products, including our WordPress plugin, and we do listen to and appreciate any and all feedback received from our publisher community.